But that is amateur hour. We're here for the good stuff. You know the thing that pretty much spelled the end of the big day? The story you've been dining out on ever since?

Allow me to present to you the seven rudest things you can do at a wedding.

#1 Binge drink

We’re not talking a few cocktails here. On weddingbee.com, user Mollie-Rose shared the definitive tale of caution. “My cousin who was also a Bridesmaid or Best Man got blind drunk at the reception and wouldn’t go home afterwards,” she wrote.

After crashing the MOH's room, the inebriated cousin then “crashed another guest’s hotel room and assaulted (kicked, bit, punched, strangled, scratched) my brother and a family friend. THEN (yes she’s still going!) she stripped off on the beach and threatened to drown herself."

#2 Wear a wedding dress

We’ve all heard of people showing up in white or sartorially upstaging the bride. But to show up in an actual wedding dress has to take that rudeness to another level. Especially when that someone is the mother of the bride.

This is exactly what happened at Jamie-Lynn Spears’ wedding where her mum showed up in what looks exactly like a wedding dress. Apparently she had the bride’s blessing (sure, Jan) but it’s probably best to err on the side of caution and leave the gown and veil at home.

The Royal Wedding1:50

From surprising celebs to inspiring sermons these are the royal wedding highlights

May 19th 2018

8 months ago

/display/newscorpaustralia.com/Web/NewsNetwork/Network News/World/

#3 Change the date of the wedding

Like florists and manicurists, wedding planners always have the best stories. On a subreddit where some of the industry's best shared their worst wedding, was this gem.

“How about momzilla? I was the planner for a wedding and had been working with the bride and groom. A few months in to planning the grooms mom calls me to change the date of the wedding,” user girlfridayfail wrote.

“I thought it was kind of weird and called the couple to confirm the change. NOPE! Couple did not know anything about the date change and said to completely ignore the groom's mum and call them if she tried to get in contact."

"The worst I've personally witnessed had a groom's baby mama (and ex fiancé) come to the reception uninvited. She grabbed the wedding cake, chucked it at the newlyweds, and began screaming how he was a deadbeat dad while she grabbed table wine bottles that she smashed on the ground.”

#5 Literally take the cake

People spends hundreds on the perfect cake for the perfect day. But what happens when a complete random shows up and takes it? I’m so glad you asked.

“I went to this wedding that I really didn't want to go to and this random middle-aged woman takes the top part of the cake and scurries away," sorry_my_bad wrote on Reddit.

"Like, doesn't even take a car. She just runs. Away. On foot. With a third of a wedding cake in her hands. It took a while for people to notice but apparently no one knew her."

#6 Ruin the dress

Some people can’t seem to resist upstaging the bride on her big day. Apparently unsatisfied with simply dressing to match, this guest basically declared all out war.

"My cousin swiped one of our gifts, a $800 3L bottle of wine, opened it, and as she was walking toward where everyone was sitting,” nosexpantherbyodeon wrote,

“She tripped and proceeded to spill a good amount of it all over my wife's wedding dress."

“My friend is the wedding planner. He is a good looking, straight male that has an amazing eye for design and detail. He can do everything from wedding dress design and execution, flowers, you name it. And his services are not cheap.

He had a bride who called him up a few days before her wedding and told him she couldn't go through with the wedding because she was in love with someone else. The conversation went something like this:

Bride: "I can't marry him, I just don't love him anymore, I think I'm in love with someone else!"

Him: "What do you mean you're in love with someone else!? Your wedding is in 5 days!"

Bride: "Well.... I'm in love with you. You just GET me! I've never met anyone else like you!"

Him: "...Do you know how much your parents are paying me to get you?!"

She ended up getting married 5 days later and it was never mentioned again.”